* (112770879) “Washington, D.c.” capitalized incorrectly
Theoretically "." is a case-ignorable character, so "D.C." is conceptually the same as "DC", whose capitalized mapping would be "Dc". This behavior doesn't seem to align with real-world use cases well though. Workaround this by splitting the string with "." and titlecasing each substring individually.
* (112770879) “Washington, D.c.” capitalized incorrectly, cont.
For FoundationPreview: Move String comparison utilities from FoundationEssentials fo _FoundationInternals so they can be accessed from FoundationInternalization too.